GRID PAINTING
You have 3 different colors to paint the squares of a 3x3 grid. -The total number of squares to be painted is 5. -Each painted square must be adjacent (horizontally or vertically) to another painted square. -Adjacent squares (horizontally or vertically) should be painted in different colors. How many different ways can this task be done? Notes: -All three colors must be used. -Disconnected groups of connected squares are allowed. If the problem was asked for 2x2 grid and 2 different colors, and the number of squares to paint was 3, the answer would be 8.
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